Neptune (1, 27, Movie) - A Neptune-themed pirahna monster who killed Jin's father. Destroyed by the X Kick.
Special Edition, Full Force of Five Riders!!
Neptune have revived with other Shinwakaijins & defeted by five riders.
Five Riders vs. King Dark
Neptune have revived once again with other GOD Cyborgs, to attack all over Tokyo and, in the middle of the crisis. & they were defeated by Five Kamen Riders.